Okay, this seems like an obvious question, the answer should be, you give it to them. But, well, I kind of opened it up already without realizing that it wasn't mine. Anyway, I've tried knocking on their door several times but they never seem to be home. So, I just left it inside their screen door. I wonder if this is a bad thing to do. Is it okay to leave it in their screen door or should I go and get it and wait till I see them in person to give it to them?